package com.lai.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.lai.common.constant.ProductConstant;
import com.lai.common.to.SkuEsModel;
import com.lai.common.to.SkuHasStockTo;
import com.lai.common.to.SkuReductionTo;
import com.lai.common.to.SpuBoundsTo;
import com.lai.common.utils.R;
import com.lai.gulimall.product.dao.CategoryDao;
import com.lai.gulimall.product.entity.*;
import com.lai.gulimall.product.feign.CouponFeignService;
import com.lai.gulimall.product.feign.ElasticSearchFeignService;
import com.lai.gulimall.product.feign.WareFeignService;
import com.lai.gulimall.product.service.*;
import com.lai.gulimall.product.vo.*;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.lai.common.utils.PageUtils;
import com.lai.common.utils.Query;

import com.lai.gulimall.product.dao.SpuInfoDao;
import org.springframework.transaction.annotation.Transactional;


@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {


    @Autowired
    SpuInfoDescService spuInfoDescService;

    @Autowired
    SpuImagesService spuImagesService;

    @Autowired
    ProductAttrValueService productAttrValueService;

    @Autowired
    SkuImagesService skuImagesService;

    @Autowired
    SkuInfoService skuInfoService;

    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    CouponFeignService couponFeignService;//远程调用

    @Autowired
    BrandService brandService;

    @Autowired
    CategoryService categoryService;

    @Autowired
    AttrService attrService;

    @Autowired
    WareFeignService wareFeignService;

    @Autowired
    ElasticSearchFeignService elasticSearchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * @param vo
     */
    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {

        //1、保存spu基本信息 pms_spu_info
        SpuInfoEntity infoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo,infoEntity);
        infoEntity.setCreateTime(new Date());
        infoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(infoEntity);

        //2、保存spu的描述信息图片 pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(infoEntity.getId());
        descEntity.setDecript(String.join(",",decript));
        spuInfoDescService.saveSpuInfoDecr(descEntity);

        //3、保存spu的图片集 pms_spu_images
        List<String> images = vo.getImages();
        spuImagesService.saveBatchImages(infoEntity.getId(),images);

        //4、保存spu的规格参数; pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        productAttrValueService.saveBaseAttrs(infoEntity.getId(),baseAttrs);

        //保存spu的积分信息；gulimall-sms->sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundsTo spuBoundsTo = new SpuBoundsTo();
        BeanUtils.copyProperties(bounds,spuBoundsTo);
        spuBoundsTo.setSpuId(infoEntity.getId());
        //远程调用gulimall-sms 保存方法
        R r1 = couponFeignService.saveSpuBounds(spuBoundsTo);
        if(r1.getCode() != 0){
            log.error("远程保存spu积分信息失败");
        }

        //5、保存当前spu对应的所有sku信息
        //5.1)sku的基本信息.; pms_sku_info
        List<Skus> skus = vo.getSkus();
        if(skus!=null &&skus.size()>0){
            skus.forEach(item ->{
                //获取默认图片的路径
                String defaultImage = "";
                for (Images image : item.getImages()) {
                    if(image.getDefaultImg() == 1){
                        defaultImage = image.getImgUrl();
                    }
                }

                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item,skuInfoEntity);
                skuInfoEntity.setBrandId(infoEntity.getBrandId());
                skuInfoEntity.setCatalogId(infoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(infoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImage);

                //保存基本信息
                skuInfoService.saveSkuInfo(skuInfoEntity);

                //保存之后才能获取sku的id
                Long skuId = skuInfoEntity.getSkuId();

                //5.2)sku的图片信息.; pms_stu_images
                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                }).filter(entity ->{
                    //TODO 没有图片路径的无需保存
                    //返回true就是需要的 被收集成list，返回false就会过滤掉
                    return !StringUtils.isEmpty(entity.getImgUrl());
                }).collect(Collectors.toList());


                //批量保存sku的图片信息
                skuImagesService.saveBatch(imagesEntities);

                //5.3) 、sku的销售属性信息:pms_sku_sale_attr_vaLue
                List<Attr> attrs = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attrs.stream().map(attr -> {
                    SkuSaleAttrValueEntity skuSaleAttrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(attr, skuSaleAttrValueEntity);
                    skuSaleAttrValueEntity.setSkuId(skuId);
                    return skuSaleAttrValueEntity;
                }).collect(Collectors.toList());

                //批量保存sku的销售属性信息
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);

                //5.4）、sku的优惠、满减等信息:  需要跨库 到 gulimall_sms
                //gulimall_sms->sms_sku_ladder\sms_sku_full_reduction\sms_member_price
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item,skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                //如果 FullCount 满几件 大于0  或者  getFullPrice 打几折 大于0   才发送请求保存
                if(skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) == 1){
                    R r = couponFeignService.saveSkuReduction(skuReductionTo);
                    if(r.getCode() != 0){
                        log.error("远程保存sku信息失败");
                    }
                }
            });
        }
    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity infoEntity) {
        this.baseMapper.insert(infoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();
        //检索条件
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
                w.eq("id",key).or().like("spu_name",key);
            });
        }
        String status = (String) params.get("status");
        if(!StringUtils.isEmpty(status)){
            wrapper.eq("publish_status",status);
        }
        String brandId = (String) params.get("brandId");
        if(!StringUtils.isEmpty(brandId)&& !"0".equalsIgnoreCase(brandId)){
            wrapper.eq("brand_id",brandId);
        }
        String catelogId = (String) params.get("catelogId");
        if(!StringUtils.isEmpty(catelogId)&& !"0".equalsIgnoreCase(catelogId)){
            wrapper.eq("catalog_id",catelogId);
        }
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );
        return new PageUtils(page);
    }

    @Override
    public void up(Long spuId) {
        //TODO 根据spuId的所有规格属性  pms_product_attr_value
        List<ProductAttrValueEntity> baseAttrs = productAttrValueService.baseAttrListForSpu(spuId);

        //收集规格属性的id
        List<Long> attrIds = baseAttrs.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        //查找可以被检索的属性  pms_attr
        List<Long> searchAttrIds = attrService.selectSearchAttrs(attrIds);
        //去除重复数据
        Set<Long> idSet = new HashSet<>(searchAttrIds);

        List<SkuEsModel.Attrs> attrsList = baseAttrs.stream().filter(item -> {
            //返回idSet里面的数据
            return idSet.contains(item.getAttrId());
        }).map(item -> {
            SkuEsModel.Attrs attrs = new SkuEsModel.Attrs();
            BeanUtils.copyProperties(item, attrs);
            return attrs;
        }).collect(Collectors.toList());

        //1、查出当前spuid对应的所有sku信息、品牌的名字
        List<SkuInfoEntity> skuInfoEntities = skuInfoService.getSkuBySpuId(spuId);

        // 1、远程调用，查询库存系统是否有库存  hasStock      SkuInfoEntity::getSkuId == return item.getSkuId
        List<Long> skuIdList = skuInfoEntities.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());
        Map<Long, Boolean> stockMap = null;
        try{
            R r = wareFeignService.getSkusHasStock(skuIdList);
            TypeReference<List<SkuHasStockTo>> typeReference = new TypeReference<List<SkuHasStockTo>>() {
            };
            //收集成map  Collectors.toMap(SkuHasStockTo::getSkuId（key）,item -> item.getHasStock()  （ value）)
            stockMap = r.getData(typeReference).stream().collect(Collectors.toMap(SkuHasStockTo::getSkuId, item -> item.getHasStock()));
        }catch (Exception e){
            log.error("库存服务查询异常，原因{}",e);
        }


        // Map<Long, Boolean> key：skuId    value:true(有库存)  false（没有库存）
        Map<Long, Boolean> finalStockMap = stockMap;
        //2、封装每个sku的信息
        List<SkuEsModel> upProducts = skuInfoEntities.stream().map(sku -> {
            //组装需要的数据
            SkuEsModel skuEsModel = new SkuEsModel();
            BeanUtils.copyProperties(sku,skuEsModel);
            //skuPrice,skuImg
            skuEsModel.setSkuPrice(sku.getPrice());
            skuEsModel.setSkuImg(sku.getSkuDefaultImg());

            //TODO 设置库存信息
            if(finalStockMap == null){
                skuEsModel.setHasStock(true);
            }else{
                skuEsModel.setHasStock(finalStockMap.get(sku.getSkuId()));
            }

            //TODO 2、热度评分 hotScore 0
            skuEsModel.setHotScore(0L);
            //TODO 3、查询品牌和分类的名字信息
            BrandEntity brandEntity = brandService.getById(skuEsModel.getBrandId());
            skuEsModel.setBrandName(brandEntity.getName());
            skuEsModel.setBrandImg(brandEntity.getLogo());

            CategoryEntity categoryEntity = categoryService.getById(skuEsModel.getCatalogId());
            skuEsModel.setCatalogName(categoryEntity.getName());

            skuEsModel.setAttrs(attrsList);
            return skuEsModel;
        }).collect(Collectors.toList());

        //TODO 5、将数据发送给es进行保存；  远程调用 guliall-search
        R r = elasticSearchFeignService.productStatusUp(upProducts);
        if(r.getCode() == 0){
            //远程调用成功
            //TODO 6、修改当前spu的状态
            baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        }else{
            //远程调用失败
            //TODO 7、接口幂等性
        }

    }

    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {
        SkuInfoEntity skuInfoEntity = skuInfoService.getById(skuId);
        SpuInfoEntity spuInfoEntity = baseMapper.selectById(skuInfoEntity.getSpuId());
        return spuInfoEntity;
    }


}